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Mixed Matrix Membranes with Excellent CO 2 Capture Induced by Nano‐Carbon Hybrids
Author(s) -
Pan Xinglong,
Zhang Jianqiang,
Xue Qingzhong,
Li Xiaofang,
Ding Degong,
Zhu Lei,
Guo Tianchao
Publication year - 2017
Publication title -
chemnanomat
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.947
H-Index - 32
ISSN - 2199-692X
DOI - 10.1002/cnma.201700086
Subject(s) - graphene , membrane , adsorption , materials science , chemical engineering , oxide , carbon nanotube , nanocomposite , selectivity , nanotechnology , chemistry , organic chemistry , catalysis , biochemistry , engineering , metallurgy
1 D multi‐walled carbon nanotube/graphene oxide nanoribbon (MWCNT@GONRs) hybrids were prepared using a chemical method as fillers for Pebax‐based mixed matrix membranes (MMMs) with excellent CO 2 separation performance. Herein, the GONRs shell provided a selective barrier and large gas adsorption area, which contributed to enhancement of gas selectivity, while MWCNTs core with smooth internal surface acted as a rapid transport channel, which improved the gas permeability. It is found that MMMs with 1 wt % loading showed the highest separation factor (80 for CO 2 /N 2 and 23 for CO 2 /CH 4 ) and high CO 2 permeability, far surpassing the upper bound line. Therefore, the synergistic effect of the MWCNTs core and GONRs shell in MWCNT@GONRs nanohybrids can effectively enhance the gas‐separation performance of MMMs at low loading. The unique microstructures, ease of synthesis and low filled loading make MWCNT@GONRs promising candidates in post‐combustion and sustainable chemistry.
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